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Byju's Answer
Standard XII
Physics
Vectors and Its Types
Find the poin...
Question
Find the point of intersection of the plane
¯
r
.
(
1
,
1
,
1
)
=
2
and the line
¯
r
=
(
4
,
5
,
3
)
+
k
(
2
,
2
,
1
)
,
k
∈
R
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Solution
Any point on the line
¯
r
=
(
4
,
5
,
3
)
+
k
(
2
,
21
)
is given by
(
4
+
2
k
,
5
+
2
k
,
3
+
k
)
Since, this point also lies on the plane given by
¯
r
.
(
1
,
1
,
1
)
=
2
⟹
4
+
2
k
+
5
+
2
k
+
3
+
k
=
2
⟹
5
k
=
−
10
⟹
k
=
−
2
hence, point is
(
0
,
1
,
1
)
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0
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Q.
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¯
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^
j
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,
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5
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)
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¯
r
=
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¯
i
−
¯
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¯
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